Module: Fragmentation (Standard)
(c) 2008 by O.Conrad
Menu: Grid > Analysis > Fragmentation Analysis
Description
Grid based fragmentation analysis after Riitters et al. (2000).

(1) interior, if Density = 1.0
(2) undetermined, if Density > 0.6 and Density = Connectivity
(3) perforated, if Density > 0.6 and Density - Connectivity > 0
(4) edge, if Density > 0.6 and Density - Connectivity < 0
(5) transitional, if 0.4 < Density < 0.6
(6) patch, if Density < 0.4


References:
Riitters, K., Wickham, J., O'Neill, R., Jones, B., Smith, E. (2000):
Global-scale patterns of forest fragmentation. Conservation Ecology 4(2): 3
http://www.ecologyandsociety.org/vol4/iss2/art3/

Parameters
NameTypeIdentifierDescriptionConstraints
Input
Classification Grid (input)CLASSES
Output
Density [Percent]Grid (output)DENSITYDensity Index (Pf).
Connectivity [Percent]Grid (output)CONNECTIVITYConnectivity Index (Pff).
FragmentationGrid (output)FRAGMENTATIONFragmentation Index
Summary (*)Table (optional output)FRAGSTATS
Options
Class IdentifierIntegerCLASS
NeighborhoodValue rangeNEIGHBORHOODMoving window size = 1 + 2 * Neighborhood.
Level AggregationChoiceAGGREGATIONAvailable Choices:
[0] average
[1] multiplicative
Add BorderBooleanBORDER
Connectivity WeightingFloating pointWEIGHTMinimum: 0.000000
Minimum Density [Percent]Floating pointDENSITY_MINValue Range: 0.000000 - 100.000000
Minimum Density for Interior Forest [Percent]Floating pointDENSITY_INTif less than 100, it is distinguished between interior and core forestValue Range: 0.000000 - 100.000000
Neighborhood TypeChoiceCIRCULARAvailable Choices:
[0] square
[1] circle
Include diagonal neighbour relationsBooleanDIAGONAL
(*) optional